The Collaborative International Dictionary of English v.0.48:

Pons \Pons\, n.; pl. Pontes. [L., a bridge.] (Anat.)
   A bridge; -- applied to several parts which connect others,
   but especially to the pons Varolii, a prominent band of
   nervous tissue situated on the ventral side of the medulla
   oblongata and connected at each side with the hemispheres of
   the cerebellum; the mesocephalon. See Brain.
   [1913 Webster]

   Pons asinorum. [L., literally, bridge of asses.] See
      Asses' bridge, under Ass.
      [1913 Webster]